Each endpoint returns JSON in its final production shape, behind real auth and real metering. Mock data is deterministic per request, so design-partner integration tests do not flake.
Every response includes _meta, _reasoning, _citations, _confidence, and _links. Optional opt-in fields: _alternatives, _counterfactual, _suggestions. See conventions.
Top N tickers ranked by volume vs. baseline, with reasoning trace. Distinguishes new positioning (positive OI delta) from closing.
Customer types: Hedge funds · Prop · Indie
MCP tool: evio_options_unusual
Example:
curl -H "Authorization: Bearer $EVIO_KEY" \ "https://api.evioinc.com/v1/options/unusual?ticker=XNAS:AAPL&lookback=30d&limit=5"Reference →
Factor exposures (value, momentum, quality, low-vol, size) plus composite score for a basket of tickers up to 50.
Customer types: Hedge funds · Asset managers · Indie
MCP tool: evio_factor_score
Reference →Submit a strategy spec; receive equity curve, Sharpe ratio, max drawdown, exposure stats. Sync, streaming (SSE), and async modes available. Use the async variant evio_backtest_run_async for jobs > 60s.
Customer types: Hedge funds · Asset managers · Indie
MCP tools: evio_backtest_run, evio_backtest_run_async
Reference →Rating, target price, key drivers, comparable set, recent catalysts. One ticker per call (or batch up to 50).
Customer types: Hedge funds · Asset managers · Family office
MCP tool: evio_equity_research
Reference →Risk-on / risk-off / late-cycle / early-cycle classification with confidence and 30-day history. Subscribable via regime.changed webhook.
Customer types: Hedge funds · Asset managers · Prop
MCP tool: evio_regime_classify
Reference →Tone change for a ticker over a configurable window. Returns sentiment score, baseline, z-score, and top contributing headlines.
Customer types: Hedge funds · Indie · Fintech
MCP tool: evio_news_sentiment
Reference →Structured summary keyed by accession number, with diff against the prior filing of the same form type (e.g., 10-Q vs. previous 10-Q).
Customer types: Hedge funds · Asset managers · Banks
MCP tool: evio_sec_filing
Reference →Submit a portfolio (positions + weights). Receive 1-day and 10-day VaR, expected shortfall, factor exposures, scenario impacts, top concentration risks.
Customer types: Hedge funds · Asset managers · Banks
MCP tool: evio_portfolio_risk
Reference →All eight endpoints currently return mock JSON in their final response shape. Mock data is deterministic per request URL+body so integration tests are stable. Live data integration is targeted for Q3 2026 and will be a transparent provider swap. Schemas and field names will not change.